Twitter widget – not displaying any tweets although all API keys are set correctly

Hi,

I am trying to set up the Twitter widget in the footer. I’ve set up the API key etc and I’ve set up the username in the widgets setting but it doesn’t seem to display any tweets. It comes up with the “Follow us on Twitter” link which goes to the correct profile but none of the tweets show up. I’ve doubled checked all the api keys etc and they are correct, so I’m not sure what’s wrong!

Regards,
Aimee